package com.chun.utils;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;

import com.chun.pojo.AliOSSProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.util.UUID;

/**
 * 阿里云 OSS 工具类
 */

@Component
public class AliOSSUtils {
//    第二种方法
//    //@Value("${aliyun.oss.endpoint}")
//    private String endpoint;
//    //@Value("${aliyun.oss.accessKeyId}")
//    private String accessKeyId;
//    //@Value("${aliyun.oss.accessKeySecret}")
//    private String accessKeySecret;
//    //@Value("${aliyun.oss.bucketName}")
//    private String bucketName;

    /**
     * 实现上传图片到OSS
     */
    //第三种方法
    @Autowired
    AliOSSProperties aliOSSProperties;

    public String upload(MultipartFile file) throws IOException {
        // 获取上传的文件的输入流
        InputStream inputStream = file.getInputStream();

        // 避免文件覆盖
        String originalFilename = file.getOriginalFilename();
        String fileName = UUID.randomUUID().toString() + originalFilename.substring(originalFilename.lastIndexOf("."));

        //上传文件到 OSS
        OSS ossClient = new OSSClientBuilder().build(aliOSSProperties.getEndpoint(), aliOSSProperties.getAccessKeyId(), aliOSSProperties.getAccessKeySecret());
        ossClient.putObject(aliOSSProperties.getBucketName(), fileName, inputStream);

        // 文件访问路径（标准格式）
        String endpoint = aliOSSProperties.getEndpoint();
        String bucketName = aliOSSProperties.getBucketName();
        String url = "https://" + bucketName + "." + endpoint + "/" + fileName;
        // 关闭ossClient
        ossClient.shutdown();
        return url;// 把上传到oss的路径返回
    }

}
